Home / 1,111,339.70-1,666,365.87-978,486.74

Finding the Fourth Proportional to 1,111,339.70, 1,666,365.87 and 978,486.74

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Solution

The fourth proportional to 1,111,339.70, 1,666,365.87 and 978,486.74 is: 1,467,163.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,111,339.70 : 1,666,365.87 = 978,486.74 : x
  2. Step 2: Convert to fraction form
    1,111,339.70/1,666,365.87 = 978,486.74/x
  3. Step 3: Cross multiply
    1,111,339.70x = 1,666,365.87 × 978,486.74
  4. Step 4: Simplify right side
    1,111,339.70x = 1,630,516,907,783.56
  5. Step 5: Solve for x
    x = 1,630,516,907,783.56/1,111,339.70
  6. Step 6: Final answer
    x = 1,467,163.38

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.